Image intensifier with improved electromagnetic compatibility
View Patent ↗An image intensifier includes a photocathode ( 11 ) with a face plate ( 22 ). A conductive layer ( 24 ) is disposed outwardly from the face plate ( 22 ). A grounded conductor ( 16 ) is electrically coupled to the conductive layer ( 24 ) and grounds the conductive layer ( 24 ).
1. An image intensifier, comprising:
a photocathode comprising a face plate;
a substantially flat conductive layer disposed outwardly from the face plate;
a grounded conductor electrically coupled to the conductive layer and operable to ground the conductive layer; and
a window disposed outwardly from the conductive layer, the conductive layer deposited outwardly from the window.
2. An image intensifier, comprising:
a photocathode comprising a face plate;
a substantially flat conductive layer disposed outwardly from the face plate;
a grounded conductor electrically coupled to the conductive layer and operable to ground the conductive layer; and
a window disposed outwardly from the conductive layer, the conductive layer deposited outwardly from a first side of the window, the conductive layer deposited outwardly from a periphery of a second side of the window.
3. The image intensifier of claim 1 or 2 , wherein the grounded conductor comprises an input housing portion, the input housing portion comprising a surface defining a hole, a conductive plug disposed within the hole and electrically coupled to the conductive layer.
4. The image intensifier of claim 1 or 2 , wherein the grounded conductor comprises a power supply housing.
5. The image intensifier of claim 1 or 2 , wherein the grounded conductor comprises a ground wire of a power supply.
6. The image intensifier of claim 1 or 2 , wherein the grounded conductor comprises an input housing portion, a conductive plug electrically coupling the conductive layer and the input housing portion.
7. The image intensifier of claim 1 or 2 , wherein the photocathode comprises a gated photocathode.
8. A method for reducing radiated emissions from a photocathode, comprising:
providing a photocathode comprising a face plate;
depositing a substantially flat conductive layer outwardly from a window;
bonding the window to the face plate; and
electrically coupling the conductive layer to a grounded conductor, wherein
depositing the conductive layer further comprises:
depositing the conductive layer outwardly from a first side of the window;
depositing the conductive layer outwardly from a periphery of a second side of the window; and wherein
bonding the window further comprises bonding the first side of the window to the face plate.
9. The method of claim 8 , wherein electrically coupling the conductive layer to the grounded conductor comprises electrically coupling the conductive layer to a grounded housing, a surface of the grounded housing defining a hole, a conductive plug disposed within the hole and electrically coupled to the conductive layer.
10. The method of claim 8 , wherein electrically coupling the conductive layer to the grounded conductor further comprises electrically coupling the conductive layer to a grounded wire of a power supply.
11. The method of claim 8 , wherein electrically coupling the conductive layer to the grounded conductor further comprises electrically coupling the conductive layer to a grounded power supply housing.
12. The method of claim 8 , wherein electrically coupling the conductive layer to the grounded conductor comprises electrically coupling the conductive layer to a grounded housing using a conductive plug electrically coupled to the conductive layer and the grounded housing.
13. The method of claim 8 , wherein the photocathode comprises a gated photocathode.
14. An image intensifier, comprising:
a gated photocathode comprising a face plate;
a substantially flat conductive layer disposed outwardly from the face plate;
a window disposed outwardly from the conductive layer, the conductive layer deposited outwardly from a first side of the window, and the conductive layer deposited outwardly from a periphery of a second side of the window; and
a grounded conductor electrically coupled to the conductive layer and operable to ground the conductive layer, the grounded conductor comprising an input housing portion, the input housing portion comprising a surface defining a hole, a conductive plug disposed within the hole and electrically coupled to the conductive layer.